The UPSC Mains answer booklet (QCAB) is A4-sized with approximately 40 ruled pages plus 3 blank pages for rough work and diagrams. Standard practice is 2 pages per 10-mark answer and up to 3.5–4 pages per 15-mark answer. Leaving wide margins (the printed margin line) and writing on both sides of the page is standard.
QCAB Basics
QCAB stands for Question-cum-Answer Booklet — the answer booklet issued in UPSC Mains.
| Feature | Detail |
|---|---|
| Size | A4 (210 x 297 mm) |
| Pages | ~40 ruled pages + 3 blank pages |
| Line spacing | Standard ruling (~8mm between lines) |
| Margin | Pre-printed left margin |
| Ink colour | Blue or black (ballpoint, gel, or rollerball) |
| Additional booklets | Available on request if you fill the main booklet |
Page Budget Per Question
| Question Type | Word Limit | Recommended Pages |
|---|---|---|
| 10-mark question | 150 words | 1.5–2 pages |
| 15-mark question | 250 words | 2.5–3.5 pages |
At approximately 70–80 words per ruled A4 page (with normal-sized handwriting), 250 words = approximately 3–3.5 pages.
Formatting Rules
- Write question number clearly before each answer — the examiner must be able to identify which question you are answering
- Always write within the printed margin — writing in the margin reduces legibility
- Leave a blank line between paragraphs — visual separation helps the examiner parse your answer structure
- Do not use pencil for the main answer text — pencil is only for diagrams/maps
- Never overwrite or scratch repeatedly — a clean single strike-through is sufficient for a correction
The Blank Pages (Rough Work)
The 3 blank pages at the back are for rough work, planning, and diagrams. Use them:
- Write your answer outline (bullet points) in the rough section before writing the answer
- Draw diagram drafts here, then reproduce in the answer as needed
When to Request an Additional Booklet
Request an additional booklet when you are on the second-to-last page — not when you have completely run out. This avoids a gap in writing flow while waiting.
BharatNotes